Migrate PST To Office 365 - PST File Migration To O365
You can use this third-party tool, PST to Office 365 Migration Software, to import PST files into your Office 365 account with ease. This software allows you to quickly import emails, contacts, calendars, tasks, and other items from PST file into Office 365 account. It assists users in managing PST data in Office 365 mailbox by allowing them to create a new folder in O365 and then upload the PST to Exchange Online in that folder. Before the migration, this app allows you to preview all of your emails items.
You can try this software free demo version from here: